Research And Implementation Of Networked Data Acquisition System Based On Cortex-M3

This networked data acquisition device has been studied, including dataacquisition and intelligent gateways. The networked data acquisition is based onCortex-M3core for the development of embedded real-time multitasking operatingsystem μC/OSII and graphics support software μC/GUI, to achieve the intelligentgateway and portable data acquisition integration.When used as an intelligent gateway,enabling the Modbus protocol, CAN bus protocol and Ethernet protocol conversionbetween, and can be achieved in determining an input bus protocol under the premiseof the other two bus protocols can simultaneously output function; when used as aportable data collector,it can make the collection of real-time industrial data stored inthe storage device through the infrared wireless communication, real-time data can bedisplayed via text or curve. The networked data acquisition to achieve an industrialsite with a variety of field bus protocols coexist through the function selection can beconvenient in the intelligent gateway and switch between portable data logger.The main features of the networked data acquisition are as follows: firstly,used asan intelligent gateway, three protocols can be loaded for each other, to achieve aninput protocol conversion as an output protocol, or an input protocol simultaneouslyconverted into two output agreement, in order to achieve the purpose of versatile;secondly, used as a portable data acquisition, can achieve real-time data acquisition,real-time data acquisition via infrared wireless communicationimplementation.thirdly,on the communication protocol configuration, can be directlyconfigured on the device directly, avoiding the involvement of the PC, making theapplication more convenient. When the network is used as a data logger intelligentgateway, you can set the CAN bus protocol, Modbus bus protocol and Ethernetprotocol conversion between three protocols, and its implementation method isthrough the network data acquisition device touch screen to select the input and outputprotocols, and the corresponding protocol configuration, and to determine theprotocol conversion direction; when networked data acquisition is used as dataacquisition, require better real-time, real-time curve, or through real-time datacollection form will be displayed. Data processing and storage and to develop aprotocol is closely related to short-distance communication using reliable infraredcommunication, one to one data transmission to ensure the data in real time and reliable. Depending on the needs of networked data acquisition can be configured intothe device, and to achieve a reasonable and efficient use.